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(11)

EP 3 532 443 A1

(12)

(43) Date of publication: 04.09.2019 Bulletin 2019/36 (21) Application number: 17809074.2 (22) Date of filing: 24.10.2017

(51) International Patent Classification (IPC):  C03C 27/10(2006.01) C03C 21/00(2006.01) C03C 17/28(2006.01) C03C 17/00(2006.01) B32B 17/10(2006.01) (86) International application number: PCT/US2017/057991 (87) International publication number: WO 2018/081054 (03.05.2018 Gazette 2018/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 25.10.2016 US 201662412397 P (71) Applicant: Corning Incorporated Corning, NY 14831 (US)	(72) Inventors: BOUGHTON, Daniel Robert Naples, New York 14512 (US) FAGAN, James Gerard Painted Post, New York 14870 (US) MEBERT, Valerie Elise Corning, New York 14830 (US) MORGAN, Kenneth Spencer Painted Post, New York 14870 (US) (74) Representative: Elkington and Fife LLP  Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)